Created Issue: Sys.FormatException [27371]

hi,
i try to using perfectwidgets.com . everything ok except when ajaxcontorltoolkit is enable .
if ajax control toolkit is enable this error come :
```
Uncaught Sys.FormatException: Sys.FormatException: Format specifier was invalid.
```
and chart cant display correctly . but if ajax control toolkit is disable everthing good.
the sample file is :
[Download Sample](https://www.dropbox.com/s/97vcj700y3krjzx/perfect.rar?m)

we cant remove ajax control toolkit and we need perfectWidgets.com.
thanks.